Distributed new energy storage power station and scheduling method

Abstract

The invention relates to the technical field of new energy storage, and discloses a distributed new energy storage power station and a scheduling method.The distributed new energy storage power station comprises an energy storage box and a frame in the energy storage box, the frame is provided with multiple sets of supporting frames used for supporting energy storage batteries, and the supporting frames can slide up and down along the frame; spacing adjusting parts are supported between the upper group of supporting frames and the lower group of supporting frames, and each spacing adjusting part comprises a first sleeve, a second sleeve, a third sleeve and a fourth sleeve, the second sleeve is installed at the corner of the other set of adjacent supporting frames, the first sleeve and the second sleeve are connected in a sleeved mode, and sealed gas is contained in the first sleeve and the second sleeve. According to the invention, through the spacing adjusting part formed by the sleeve I and the sleeve II, the dynamic adjustment of the interlayer spacing of the battery is realized by utilizing a gas thermal expansion and cold contraction principle, the gas expansion is realized, the air circulation sectional area is increased and the external refrigeration energy consumption is reduced in a high-temperature environment, and the gas contraction is used for reducing the interlayer spacing and reducing the air circulation sectional area in a low-temperature condition.

Description

Technical Field

[0001] The present invention relates to the field of new energy storage technology, and in particular to a distributed new energy storage power station and a scheduling method. Background Art

[0002] As the global energy structure transition accelerates, energy storage power stations have become core infrastructure in scenarios such as grid frequency regulation and new energy consumption. Lithium-ion batteries, due to their high energy density and long cycle life, account for over 80% of the electrochemical energy storage market. However, temperature sensitivity has become a key bottleneck restricting their large-scale application. High temperatures can cause annual battery degradation rates as high as 12-18%, far exceeding the theoretical design lifespan. Low temperatures can cause a sudden drop in capacity, severely limiting their application in high-latitude regions. Furthermore, localized overheating can cause a loss of over 15% of the battery pack's available capacity and trigger a chain reaction of thermal runaway.

[0003] Existing new energy storage systems maintain a constant temperature for batteries through cooling or heating. To save space and improve battery storage efficiency, batteries are typically stacked directly. Even with external cooling or heating, some batteries are less affected by the equipment. Furthermore, external equipment maintains continuous operation during the cooling or heating process, which increases energy consumption.

[0004] In addition, new energy storage batteries will mainly generate heat during operation, which can easily lead to overheating. The current behavior of dissipating heat is generally to use air circulation. When air flows over a large range, dust from the external environment will inevitably enter the new energy storage equipment. Dust can easily make heat dissipation more difficult. At the same time, conductive dust will affect the short circuit of the equipment, which will greatly affect the new energy storage equipment. Summary of the Invention

[0005] The purpose of the present invention is to provide a distributed new energy storage power station and a scheduling method to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a distributed new energy storage power station, comprising an energy storage box and a frame inside the energy storage box, wherein the frame has multiple groups of support frames for supporting energy storage batteries, the support frames being slidable in the vertical direction along the frame, and a spacing adjustment portion being supported between the upper and lower groups of the support frames, the spacing adjustment portion comprising:

[0007] Sleeve 1, installed at the corners of a set of support frames;

[0008] The second sleeve is installed at the corners of another group of adjacent support frames. The first sleeve and the second sleeve are sleeved with each other, and there is sealed gas inside them. When the temperature inside the energy storage box changes, the volume of the sealed gas changes, realizing the change in the sleeved degree of the first sleeve and the second sleeve, and changing the distance between the energy storage batteries;

[0009] The temperature detector is installed outside the first sleeve and is used to monitor the temperature change in real time.

[0010] Furthermore, there are distance adjustment parts at the four corners of two adjacent groups of the support frames. There is a connecting end integrally formed on the outside of the first sleeve of the four groups of distance adjustment parts. The connecting end is connected with a first conduit. A plurality of the first conduits and the four groups of distance adjustment parts form a frame-shaped communication setting, and the air pressure in the four groups of distance adjustment parts remains the same.

[0011] Furthermore, a longitudinally extending second conduit is communicated with the first conduit on one side of different layers. The second conduit is used to communicate the distance adjustment parts of different layers. There is a controller and an air pump outside the energy storage box. The second conduit is communicated with the air pump. The inner end of the first sleeve also has a pressure detector for detecting the air pressure change. The pressure detector and the air pump are both electrically connected to the controller. The air pump is used to inflate the inside of the distance adjustment part.

[0012] Furthermore, the sleeved end of the first sleeve has a sealing part for realizing the seal between the first sleeve and the second sleeve;

[0013] The sealing part includes a layer integrally formed at the sleeved end of the first sleeve. The outer circumferential surface of the layer fits with the inner wall of the second sleeve. A first groove is formed on the outer circle of the layer. There is a sealing ring in the first groove. The sealing ring is squeezed with the inner wall of the second sleeve to form a seal.

[0014] Furthermore, the sealing ring is made of polyurethane or hydrogenated nitrile rubber.

[0015] Furthermore, at least two second grooves are formed on the outer circle of the layer. The two second grooves are respectively located on both sides of the first groove. A cylindrical inner cavity is formed inside the layer. A connecting groove communicating with the two second grooves is formed on the inner wall of the outer end of the inner cavity. A spring is arranged in the inner cavity. A retaining piece is fixed at the outer end of the spring. The retaining piece fits with the inner wall of the inner cavity. The spring and the retaining piece are used to push the lubricating oil in the inner cavity to fill into the second grooves.

[0016] Furthermore, an outer end cover is fixed to the outside of the layer by bolts. The outer end cover is used to cover the inner cavity.

[0017] Further, filling holes are formed inside the laminate. One end of each filling hole communicates with the second groove, and the other end penetrates through the outer end cover outward. A one-way valve for closing the filling hole is embedded inside the filling hole.

[0018] Further, both ends of the second sleeve are provided with through holes. The end away from the first sleeve is fixed with an outer cover through bolts. A seal is provided between the outer cover and the second sleeve, and the outer cover is fixed to the corners of the support frame.

[0019] A dispatching method for a distributed new energy energy storage power station includes the following steps:

[0020] Step 1: Real-time collect the temperature of the temperature detector inside the energy storage box and the state of charge of the battery pack;

[0021] Step 2: Obtain the grid load demand and time-of-use electricity price signal, and set the preset temperature threshold range of the energy storage box;

[0022] Step 3: Dynamically adjust the charge and discharge power threshold of the energy storage box according to the temperature data of the temperature detector. When the temperature exceeds the safety threshold, reduce the charge and discharge rate.

[0023] Compared with the prior art, the beneficial effects achieved by the present invention are as follows:

[0024] 1. The spacing adjustment part composed of the first sleeve and the second sleeve uses the principle of thermal expansion and contraction of gas to dynamically adjust the battery layer spacing. In a high-temperature environment, gas expansion occurs to increase the air flow cross-sectional area and reduce external refrigeration energy consumption. In a low-temperature situation, gas contraction reduces the layer spacing and the cross-sectional area of air flow.

[0025] 2. By setting a structure for continuously releasing lubricating oil into the second groove, the friction coefficient is reduced when the sealing ring moves, avoiding seal failure caused by dry friction. In addition, sustainable lubrication can be achieved by injecting lubricating oil externally.

[0026] 3. Through the first transfer pipe and the second transfer pipe, the air pressure in each spacing adjustment part is made the same, avoiding the acting force tending to bend, so that only the up-and-down acting force exists between the first sleeve and the second sleeve. In addition, the air pressure inside the spacing adjustment part is detected by an air pressure detector to achieve a reminder function. At the same time, when there is air leakage, the controller can control the operation of the air pump. When the intake air volume is greater than the exhaust air volume, it plays a supporting role to prevent the energy storage batteries from stacking due to damage to the spacing adjustment part. Description of the Drawings

[0027] The drawings are used to provide a further understanding of the present invention, and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention, and do not constitute a limitation to the present invention. In the drawings:

[0028] Figure 1It is a schematic diagram of the overall structure of the present invention;

[0029] Figure 2 It is a schematic diagram of the internal structure of the energy storage box of the present invention;

[0030] Figure 3 It is a schematic diagram of a set of frame structures of the present invention;

[0031] Figure 4 It is a schematic diagram of the distribution structure of the spacing adjustment part of one layer and the support frames of multiple layers of the present invention;

[0032] Figure 5 It is a schematic diagram of the disassembled structure of the spacing adjustment part of the present invention;

[0033] Figure 6 It is a schematic diagram of the partial cross-sectional structure of the sealing part of the present invention;

[0034] Figure 7 It is a schematic diagram of the disassembled structure of the local part of the sealing part of the present invention;

[0035] Figure 8 It is a schematic diagram of the position structure of the filling hole located inside the sealing part of the present invention;

[0036] Figure 9 It is a schematic diagram of the socketing structure of sleeve one and sleeve two of the present invention.

[0037] In the figure: 1. Energy storage box; 2. Air pump; 3. Frame; 4. Support frame; 5. Spacing adjustment part; 51. Sleeve one; 52. Connection end; 53. Sealing part; 531. Layer body; 532. Groove one; 533. Sealing ring; 534. Inner cavity; 535. Spring; 536. Flap; 537. Connection groove; 538. Groove two; 539. Outer end cover; 530. Filling hole; 54. Sleeve two; 55. Outer cover; 6. First transfer pipe; 7. Second transfer pipe; 8. Temperature detector. Detailed implementation manners

[0038] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0039] Embodiment 1:

[0040] Please refer to Figures 1-9, the present invention provides a technical solution: The power generated by energy storage batteries also varies under environmental changes. When the ambient temperature is high, after the energy storage battery generates heat, it transfers the heat to the environment. However, due to the limited difference in ambient temperature, the heat dissipation efficiency is limited. Increasing the gap between stacked energy storage batteries can increase the gas flow and achieve the dissipation of the heat of the energy storage battery into the environment, stabilizing the temperature of the energy storage battery to a certain extent. When the ambient temperature is low, it will also affect the working efficiency of the energy storage battery. The stacked energy storage batteries have a relatively high heat dissipation efficiency under a large temperature difference. Therefore, reducing the gap between the energy storage batteries can reduce the gas flow efficiency and preserve the temperature of the energy storage battery to a certain extent. Based on this, a distributed new energy energy storage power station is proposed, including an energy storage box 1 and a frame 3 inside the energy storage box 1. The frame 3 has multiple support frames 4 for supporting energy storage batteries. The support frames 4 can slide in the up and down direction of the frame 3. A spacing adjustment part 5 is supported between the upper and lower two support frames 4. The spacing adjustment part 5 includes:

[0041] A first sleeve 51, installed at the corner of a group of support frames 4;

[0042] A second sleeve 54, installed at the corner of another adjacent group of support frames 4. The first sleeve 51 and the second sleeve 54 are sleeved, and the gas sealed inside them changes in volume when the temperature inside the energy storage box 1 changes, realizing the change in the sleeved degree of the first sleeve 51 and the second sleeve 54 and changing the spacing between the energy storage batteries;

[0043] A temperature detector 8, installed outside the first sleeve 51, for real-time monitoring of temperature changes.

[0044] Specifically, the frame 3 is fixed inside the energy storage box 1 and extends longitudinally. Multiple support frames 4 are slidably installed on the frame 3. The support frames 4 are limited to the frame 3 by a clamping method, and the support frames 4 can move longitudinally along the frame 3. A spacing adjustment part 5 is installed between the upper and lower adjacent support frames 4 for automatically adjusting the spacing between the support frames 4 and the support frames 4, realizing the change in the spacing between adjacent energy storage batteries, thereby changing the air flow degree.

[0045] It should be noted that the spacing adjustment part 5 includes a first sleeve 51 and a second sleeve 54. The first sleeve 51 and the second sleeve 54 are sleeved and supported at the corners of two adjacent groups of support frames 4. The gas inside the first sleeve 51 and the second sleeve 54 is in a sealed state, and the change in the external ambient temperature will cause a change in volume, thereby realizing the change in the spacing between two adjacent groups of support frames 4.

[0046] The four corners of adjacent two groups of support frames 4 are all provided with spacing adjustment parts 5. A connection end 52 is integrally formed on the outer side of the first sleeve 51 of the four groups of spacing adjustment parts 5. A first transfer pipe 6 is connected to the connection end 52. A plurality of first transfer pipes 6 and the four groups of spacing adjustment parts 5 form a frame-shaped communication arrangement, and the air pressure in the four groups of spacing adjustment parts 5 is kept the same.

[0047] Specifically, the internal gas content in the spacing adjustment parts 5 at the four corners of adjacent two groups of support frames 4 is the same. At the same time, due to the fact that the first sleeve 51 and the second sleeve 54 can only extend longitudinally and the support frame 4 can only slide on the frame 3, and the spacing adjustment parts 5 at the same level are connected by the first transfer pipe 6, the support frame 4 is kept horizontal. It should be noted that due to the sleeves 51 and 54 being sleeved and having gas inside, the temperature change of the environment and the temperature change of the energy storage battery are slow. Therefore, the gas in the first sleeve 51 and the second sleeve 54 is also affected slowly, and there is no possibility of damaging the energy storage battery.

[0048] On one side of the first transfer pipes 6 of different layers, longitudinally extending second transfer pipes 7 are communicated. The second transfer pipes 7 are used to communicate the spacing adjustment parts 5 of different layers. A controller and an air pump 2 are provided outside the energy storage box 1. The second transfer pipes 7 are communicated with the air pump 2. The inner end of the first sleeve 51 is also provided with a pressure detector for detecting air pressure changes. The pressure detector and the air pump 2 are both electrically connected to the controller, and the air pump 2 is used to inflate the inside of the spacing adjustment part 5.

[0049] Specifically, the spacing adjustment parts 5 of different layers are communicated through the second transfer pipes 7, and are connected to the second transfer pipes 7 through the air pump 2. The air pressure change inside the spacing adjustment part 5 is detected by the pressure detector, and the signal is transmitted to the controller. The controller controls whether the air pump 2 supplies gas. It should be noted that when the air pressure becomes 0, the air pump 2 starts to supply gas. There is a situation of air intake and air outlet at the same time. When the air intake volume is greater than the air outlet volume, it plays a supporting role to prevent the energy storage battery from stacking due to the damage of the spacing adjustment part 5.

[0050] One end of the first sleeve 51 that is sleeved has a sealing part 53 for realizing the seal between the first sleeve 51 and the second sleeve 54;

[0051] The sealing part 53 includes a layer body 531 integrally formed at the sleeved end of the first sleeve 51. The outer circumferential surface of the layer body 531 fits with the inner wall of the second sleeve 54. A first groove 532 is formed on the outer circumference of the layer body 531. A sealing ring 533 is arranged in the first groove 532, and the sealing ring 533 is pressed against the inner wall of the second sleeve 54 to form a seal.

[0052] Specifically, the first sleeve 51 and the second sleeve 54 are sealed through the sealing ring 533 to limit the internal gas.

[0053] The sealing ring 533 is made of polyurethane or hydrogenated nitrile rubber. Using polyurethane or hydrogenated nitrile rubber makes the sealing ring 533 more wear-resistant.

[0054] At least two second grooves 538 are also formed on the outer ring of the layer body 531. The two second grooves 538 are respectively located on both sides of the first groove 532. A cylindrical inner cavity 534 is formed inside the layer body 531. A connecting groove 537 communicating with the two second grooves 538 is formed on the inner wall of the outer end of the inner cavity 534. A spring 535 is arranged inside the inner cavity 534. A retaining piece 536 is fixed to the outer end of the spring 535. The retaining piece 536 is attached to the inner wall of the inner cavity 534. The spring 535 and the retaining piece 536 are used to push the lubricating oil inside the inner cavity 534 to fill into the second grooves 538.

[0055] Specifically, due to the second grooves 538 filled with lubricating oil on the outer side of the layer body 531, when the sealing ring 533 moves along with the layer body 531, the route passed by the sealing ring 533 is kept with lubricating oil, avoiding being too dry and affecting the quality of the sealing ring 533.

[0056] An outer end cover 539 is also fixed to the outer side of the layer body 531 by bolts. The outer end cover 539 is used to cover the inner cavity 534. It should be noted that by the detachable outer end cover 539, the inner cavity 534 can be opened and closed, enabling the spring 535 and the retaining piece 536 to be loaded and unloaded. It should also be noted that when the outer end cover 539 is fixed to the layer body 531, it is in a sealed state, preventing the lubricating oil inside the inner cavity 534 from moving outwards.

[0057] A filling hole 530 is formed inside the layer body 531. One end of the filling hole 530 communicates with the second groove 538, and the other end penetrates through the outer end cover 539 outwards. A one-way valve for closing the filling hole 530 is embedded inside the filling hole 530. Through the one-way valve, the filling hole 530 can inject lubricating oil inwards, but the lubricating oil cannot overflow outwards.

[0058] The two ends of the second sleeve 54 are provided with through holes. The outer cover 55 is fixed to the end far from the first sleeve 51 by bolts. The outer cover 55 is sealed with the second sleeve 54. The outer cover 55 is fixed to the corner of the support frame 4. It should be noted that when injecting lubricating oil into the filling hole 530, it is necessary to keep the outer side of the second groove 538 in contact with the inner wall of the second sleeve 54. Therefore, it is necessary to set the two ends of the second sleeve 54 to be through holes, and the outer cover 55 is detachably fixed to the second sleeve 54 to keep the outer side of the second groove 538 in contact with the inner wall of the second sleeve 54 and inject lubricating oil from the filling hole 530.

[0059] Embodiment 2:

[0060] A distributed new energy energy storage power station scheduling method includes the following steps:

[0061] Step 1: Collect the temperature of the internal temperature detector 8 and the state of charge of the battery pack in real time in the energy storage box 1;

[0062] Step 2: Obtain the grid load demand, time-of-use electricity price signal, and set the preset temperature threshold range of the energy storage box 1;

[0063] Step 3: Dynamically adjust the charge and discharge power threshold of the energy storage box 1 according to the temperature data of the temperature detector 8, and reduce the charge and discharge rate when the temperature exceeds the safety threshold.

[0064] Working principle of the present invention: The upper end of the support frame 4 is used to place energy storage batteries. The temperature inside the energy storage box 1 will change under the influence of the external environment and the charge and discharge of the energy storage batteries. Based on this, it is necessary to control the temperature inside the energy storage box 1 in real time. The batteries inside the energy storage box 1 are often stacked. When the external environmental temperature is low, it is difficult for the temperature of the stacked energy storage batteries to dissipate, so the temperature will rise. Therefore, no additional external heating or cooling equipment is required when the environmental temperature is low. However, when the external environmental temperature is high, the temperature of the stacked energy storage batteries will further increase during charge and discharge. Therefore, it is necessary to dissipate heat from them.

[0065] Based on the above description of the working principle, a spacing adjustment part 5 is installed between each layer of the support frame 4 and the adjacent support frame 4. When the environmental temperature is high, the gas inside the sleeve one 51 and the sleeve two 54 will expand due to the increase in temperature. Therefore, the spacing between each layer of the support frame 4 and the adjacent support frame 4 increases, improving the heat dissipation effect. Therefore, the power of the external equipment for heat dissipation can be reduced, saving energy. After the temperature inside the environment or the energy storage box 1 decreases, the air pressure inside the sleeve one 51 and the sleeve two 54 will decrease, making the spacing between each layer of the support frame 4 and the adjacent support frame 4 shorter. Relatively, the stacked energy storage batteries are closer to each other. The reduction of the gap can attenuate the heat dissipation effect, making the temperature of the stacked energy storage batteries relatively stable, reducing the power of the external equipment for heat dissipation, and further saving energy. It should be noted that when the temperature changes in the external environment or the energy storage box 1, the gap between the stacked energy storage batteries is changed in a mechanical way. The pure mechanical method will not cause a short circuit even under the influence of dust and has a long service life.

[0066] It should be noted that since the energy storage box 1 needs to keep the temperature within a certain range, and the sleeve one 51 and the sleeve two 54 are in a sleeved state, the sleeve one 51 and the sleeve two 54 need to maintain a sealed state during telescopic changes. Therefore, a sealing ring 533 is required. In a dry environment, it is easy to cause the hardening of the material of the sealing ring 533 and the loss of elasticity. Based on this, the outer circumferential surface of the layer body 531 contacts the inner wall of the sleeve two 54, and the lubricating oil is pushed into the groove two 538 through the action of the spring 535 and the retaining piece 536. When the sleeve one 51 and the sleeve two 54 change telescopically, the movement paths of the sealing ring 533 are lubricated by the lubricating oil in the groove two 538, extending the service life of the sealing ring 533 while enabling the sleeve one 51 and the sleeve two 54 to maintain telescopic changes.

[0067] It should also be noted that as Figure 9 shown, the sleeve two 54 is separated from the outer cover 55, and the cooperation between the sleeve one 51 and the sleeve two 54 is maintained. Then, lubricating oil is injected from the filling hole 530 through an injection device. The outside of the groove two 538 is blocked by the sleeve two 54, so the inner cavity 534 can be filled with lubricating oil for subsequent maintenance. After filling the lubricating oil, the sleeve one 51 and the sleeve two 54 are installed, and then the inside of the sleeve one 51 and the sleeve two 54 is filled with gas through the air pump 2 to complete the maintenance.

[0068] In addition, according to the air pressure detector in the sleeve one 51, the change of air pressure can be monitored in real time. When the air pressure drops to 0, the spacing adjusting part 5 is damaged. The spacing adjusting parts 5 of different layers are connected to each other through the conduit one 6 and the conduit two 7, so that the air pressure inside each spacing adjusting part 5 is the same and connected. By driving the air pump 2 through the controller to generate gas inside the spacing adjusting part 5, even if there is a gas leak in the spacing adjusting part 5, the supporting effect on the support frame 4 can be realized, and the positions of the respective spacing adjusting parts 5 can be maintained to a certain extent, providing valuable time for emergency repair and preventing the temperature inside the energy storage box 1 from being too high.

[0069] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0070] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A distributed new energy energy storage power station, comprising an energy storage box (1) and a framework (3) inside the energy storage box (1), characterized in that, The frame (3) is provided with multiple groups of support frames (4) for supporting energy storage batteries. The support frames (4) can slide in the up and down direction of the frame (3). A spacing adjustment part (5) is supported between two sets of the support frames (4) above and below. The spacing adjustment part (5) includes: A first sleeve (51), installed at the corners of a set of support frames (4); A second sleeve (54), installed at the corners of another adjacent set of support frames (4). The first sleeve (51) and the second sleeve (54) are sleeved together, and the gas sealed inside them. When the temperature inside the energy storage box (1) changes, the volume of the sealed gas changes, realizing the change in the sleeved degree of the first sleeve (51) and the second sleeve (54), and changing the spacing between the energy storage batteries; A temperature detector (8), installed outside the first sleeve (51), for monitoring the temperature change in real time.

2. The distributed new energy energy storage power station according to claim 1, wherein: Spacing adjustment parts (5) are provided at the four corners of two adjacent sets of support frames (4). Connection ends (52) are integrally formed on the outside of the first sleeves (51) of the four sets of spacing adjustment parts (5). The connection ends (52) are connected with a first transfer pipe (6). A plurality of the first transfer pipes (6) and the four sets of spacing adjustment parts (5) form a frame-shaped communication setting, and the air pressures in the four sets of spacing adjustment parts (5) are kept the same.

3. The distributed new energy energy storage power station according to claim 2, wherein: On one side of the first transfer pipes (6) at different layers, longitudinally extending second transfer pipes (7) are communicated. The second transfer pipes (7) are used to communicate the spacing adjustment parts (5) at different layers. Outside the energy storage box (1), there is a controller and an air pump (2). The second transfer pipes (7) are communicated with the air pump (2). An air pressure detector for detecting the air pressure change is also provided at the inner end of the first sleeve (51). The air pressure detector and the air pump (2) are both electrically connected to the controller. The air pump (2) is used to inflate the inside of the spacing adjustment part (5).

4. The distributed new energy energy storage power station according to claim 1, wherein: One end of the first sleeve (51) that is sleeved has a sealing part (53) for realizing the seal between the first sleeve (51) and the second sleeve (54); The sealing part (53) includes a layer body (531) integrally formed at the sleeved end of the first sleeve (51). The outer circumferential surface of the layer body (531) fits with the inner wall of the second sleeve (54). A first groove (532) is formed on the outer circle of the layer body (531). A sealing ring (533) is arranged in the first groove (532). The sealing ring (533) is squeezed with the inner wall of the second sleeve (54) to form a seal.

5. The distributed new energy energy storage power station according to claim 4, wherein: The sealing ring (533) is made of polyurethane or hydrogenated nitrile rubber material.

6. The distributed new energy energy storage power station according to claim 4, wherein: At least two second grooves (538) are also formed in the outer ring of the layer body (531). The two second grooves (538) are respectively located on both sides of the first groove (532). A cylindrical inner cavity (534) is formed inside the layer body (531). A connection groove (537) communicating with the two second grooves (538) is formed in the inner wall of the outer end of the inner cavity (534). A spring (535) is arranged in the inner cavity (534). A retaining piece (536) is fixed to the outer end of the spring (535). The retaining piece (536) is attached to the inner wall of the inner cavity (534). The spring (535) and the retaining piece (536) are used to push the lubricating oil in the inner cavity (534) to fill into the second grooves (538).

7. The distributed new energy energy storage power station according to claim 6, wherein: An outer end cover (539) is also fixed to the outside of the layer body (531) by bolts. The outer end cover (539) is used to cover the inner cavity (534).

8. The distributed new energy energy storage power station according to claim 7, characterized in that: A filling hole (530) is formed inside the layer body (531). One end of the filling hole (530) communicates with the second groove (538), and the other end penetrates through the outer end cover (539) outward. A one-way valve for closing the filling hole (530) is embedded in the filling hole (530).

9. The distributed new energy energy storage power station according to claim 8, characterized in that: Both ends of the second sleeve (54) are provided with through holes. An outer cover (55) is fixed to the end far from the first sleeve (51) by bolts. The outer cover (55) is sealed with the second sleeve (54). The outer cover (55) is fixed to the corner of the support frame (4).

10. A dispatching method for a distributed new energy energy storage power station, characterized in that Using the distributed new energy energy storage power station according to any one of claims 1-9, comprising the following steps: Step 1: Real-time collect the temperature of the temperature detector (8) inside the energy storage box (1) and the state of charge of the battery pack; Step 2: Obtain the grid load demand and time-of-use electricity price signal, and set the preset temperature threshold range of the energy storage box (1); Step 3: Dynamically adjust the charge and discharge power threshold of the energy storage box (1) according to the temperature data of the temperature detector (8), and reduce the charge and discharge rate when the temperature exceeds the safety threshold.

Images